結果
| 問題 |
No.506 限られたジャパリまん
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2020-09-20 14:54:41 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 15 ms / 2,000 ms |
| コード長 | 3,880 bytes |
| コンパイル時間 | 2,108 ms |
| コンパイル使用メモリ | 197,816 KB |
| 最終ジャッジ日時 | 2025-01-14 18:57:37 |
|
ジャッジサーバーID (参考情報) |
judge3 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 25 |
ソースコード
//#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
#define rep(i, n) for(int i=0; i<n; ++i)
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
using namespace std;
using ll = int64_t;
using ld = long double;
using P = pair<int, int>;
using vs = vector<string>;
using vi = vector<int>;
using vvi = vector<vi>;
template<class T> using PQ = priority_queue<T>;
template<class T> using PQG = priority_queue<T, vector<T>, greater<T> >;
const int INF = 0xccccccc;
const ll LINF = 0xcccccccccccccccLL;
template<typename T1, typename T2>
inline bool chmax(T1 &a, T2 b) {return a < b && (a = b, true);}
template<typename T1, typename T2>
inline bool chmin(T1 &a, T2 b) {return a > b && (a = b, true);}
template<typename T1, typename T2>
istream &operator>>(istream &is, pair<T1, T2> &p) { return is >> p.first >> p.second;}
template<typename T1, typename T2>
ostream &operator<<(ostream &os, const pair<T1, T2> &p) { return os << p.first << ' ' << p.second;}
const unsigned int mod = 1000000007;
//const unsigned int mod = 998244353;
struct mint {
unsigned int x;
mint():x(0) {}
mint(int64_t x_) {
int64_t v = int64_t(x_ % mod);
if(v < 0) v += mod;
x = (unsigned int)v;
}
static mint row(int v) {
mint v_;
v_.x = v;
return v_;
}
mint operator-() const { return mint(-x);}
mint& operator+=(const mint a) {
if ((x += a.x) >= mod) x -= mod;
return *this;
}
mint& operator-=(const mint a) {
if ((x += mod-a.x) >= mod) x -= mod;
return *this;
}
mint& operator*=(const mint a) {
uint64_t z = x;
z *= a.x;
x = (unsigned int)(z % mod);
return *this;
}
mint operator+(const mint a) const { return mint(*this) += a;}
mint operator-(const mint a) const { return mint(*this) -= a;}
mint operator*(const mint a) const { return mint(*this) *= a;}
friend bool operator==(const mint &a, const mint &b) {return a.x == b.x;}
friend bool operator!=(const mint &a, const mint &b) {return a.x != b.x;}
mint &operator++() {
x++;
if(x == mod) x = 0;
return *this;
}
mint &operator--() {
if(x == 0) x = mod;
x--;
return *this;
}
mint operator++(int) {
mint result = *this;
++*this;
return result;
}
mint operator--(int) {
mint result = *this;
--*this;
return result;
}
mint pow(int64_t t) const {
mint x_ = *this, r = 1;
while(t) {
if(t&1) r *= x_;
x_ *= x_;
t >>= 1;
}
return r;
}
//for prime mod
mint inv() const { return pow(mod-2);}
mint& operator/=(const mint a) { return *this *= a.inv();}
mint operator/(const mint a) {return mint(*this) /= a;}
};
istream& operator>>(istream& is, mint& a) { return is >> a.x;}
ostream& operator<<(ostream& os, const mint& a) { return os << a.x;}
#define N 40
//head
int h, w, k, p;
int x[N], y[N];
string name[N], s[N];
ld ans = 0;
int uuu;
ld wo[N][N];
mint ww[N][N];
ld calc() {
fill(wo[0], wo[h], 0.0);
wo[0][0] = 1;
rep(i, h) rep(j, w) {
if(i and s[i-1][j] != '@') wo[i][j] += wo[i-1][j];
if(j and s[i][j-1] != '@') wo[i][j] += wo[i][j-1];
}
return wo[h-1][w-1];
}
mint calc2() {
ww[0][0] = 1;
rep(i, h) rep(j, w) {
if(i and s[i-1][j] != '@') ww[i][j] += ww[i-1][j];
if(j and s[i][j-1] != '@') ww[i][j] += ww[i][j-1];
}
return ww[h-1][w-1];
}
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
cin >> h >> w >> k >> p;
h++; w++;
fill(s, s+h, string('.', w));
rep(i, k) {
cin >> x[i] >> y[i] >> name[i];
s[x[i]][y[i]] = '@';
}
if(!p) {
cout << calc2() << endl;
return 0;
}
int r = (1<<p)-1;
while(r < 1<<k) {
rep(i, k) if(r>>i&1) {
s[x[i]][y[i]] = '*';
}
if(chmax(ans, calc())) uuu = r;
rep(i, k) if(r>>i&1) {
s[x[i]][y[i]] = '@';
}
int y = r&-r, z = (~(y+r))&r;
r = (y+r) | (z/y>>1);
}
if(ans-(1e-10) < 0) {
cout << 0 << endl;
return 0;
}
rep(i, k) if(uuu>>i&1) {
s[x[i]][y[i]] = '*';
}
cout << calc2() << endl;
rep(i, k) if(uuu>>i&1) {
cout << name[i] << endl;
}
}